Annals of Plant Protection Sciences

  • Year: 2015
  • Volume: 23
  • Issue: 1

Management of Sunflower powdery mildew caused by Erysiphe cichoracearum

  • Author:
  • K. Karuna, Y.G. Shadakshari, K.S. Jagadish, K.N. Geetha
  • Total Page Count: 7
  • DOI:
  • Page Number: 83 to 89

All India Coordinated Research Project on Sunflower Zonal Agricultural Research Station, University of Agricultural Sciences, Bengaluru-560 065, India

Abstract

Among the sunflower hybrids released from UAS, Bengaluru, Hybrid KBSH 53 was resistant to powdery mildew whereas, Hybrid KBSH 44 was highly susceptible to powdery mildew. Hybrids KBSH 1, KBSH 41 and KBSH 42 were found susceptible to powdery mildew. Difenoconazole (0.05%) spray recorded significantly lowest % disease severity of 18.3. Treatments with propiconazole and triademorph were at par with difenoconazole. Wettable sulphur was least effective and disease severity in control was highest (46.6%). Highest seed yield was recorded in difenoconazole treated plots which was significantly superior over other treatments. The highest income obtained with difenoconazole ( 19040/ha) treated plots. In management of the disease, two sprays of difenoconazole @ 0.05% was found to be effective in controlling the disease and increased the yield but wettable sulphur and triademorph showed BCR of 1: 24 and 1: 20, respectively.

Keywords

Erysiphe cichoracearum, Helianthus annuus, Management